oj.uz

Submission #432350

# Submission time Handle Problem Language Result Execution time Memory
432350 2021-06-18T08:26:45 Z arayi Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 261 ms 22276 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define ad push_back
using namespace std;

const int N = 1111;
int col[N], sm[N], i1 = 1;
vector <vector <int> > b;
vector<int> g[N];
int n;
void dfs(int v)
{
	col[v] = 2;
	sm[v]++;
	for(auto p : g[v])
		if(col[p] != 2) dfs(p);
	col[v] = 1;
}
int construct(std::vector<std::vector<int>> p) {
	n = p.size();
	for (int i = 0; i < n; i++)
		for (int j = 0; j < n; j++)
			if(p[i][j] >= 3) return 0;
	for (int i = 0; i < n; i++)
	{
		if(sm[i])
		{
			for (int j = 0; j < n; j++)
			{
				if(p[i][j] && sm[i] != sm[j]) return 0;
				if(p[i][j] == 0 && sm[i] == sm[j]) return 0;
			}
		}
		else
		{
			for (int j = 0; j < n; j++)
			{
				if(p[i][j] && sm[j]) return 0;
				if(p[i][j]) sm[j] = i1;
			}
		}
		i1++;
	}
	b.resize(n);
	for (int i = 0; i < n; i++) b[i].resize(n);
	for (int i = 1; i < i1; i++)
	{
		vector<int> fp;
		for (int j = 0; j < n; j++)
			if(sm[j] == i) fp.ad(j);
		int nx = -1;
		for (int j = 0; j < fp.size(); j++)
		{
			if(col[fp[j]]) continue;
			if(nx != -1) b[nx][fp[j]] = b[fp[j]][nx] = 1;
			nx = fp[j];
			col[fp[j]] = 1;
			for (int k = j + 1; k < fp.size(); k++)
				if(p[fp[j]][fp[k]] == 1) b[fp[j]][fp[k]] = b[fp[k]][fp[j]] = 1, col[fp[k]] = 1;
		}		
		if(nx != -1 && nx != fp[0]) b[nx][fp[0]] = b[fp[0]][nx] = 1;
	}
	for (int i = 0; i < n; i++)
		for (int j = 0; j < n; j++)
			if(b[i][j]) g[i].ad(j);
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++) sm[j] = col[j] = 0;
		dfs(i);
		for (int j = 0; j < n; j++) if(sm[j] != p[i][j]) return 0;
	}
	build(b);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:52:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   for (int j = 0; j < fp.size(); j++)
      |                   ~~^~~~~~~~~~~
supertrees.cpp:58:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |    for (int k = j + 1; k < fp.size(); k++)
      |                        ~~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 10 ms 1200 KB Output is correct
7 Correct 240 ms 22028 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 10 ms 1200 KB Output is correct
7 Correct 240 ms 22028 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1100 KB Output is correct
13 Correct 231 ms 22032 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 98 ms 8084 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 58 ms 5784 KB Output is correct
21 Correct 230 ms 22212 KB Output is correct
22 Correct 229 ms 22100 KB Output is correct
23 Correct 239 ms 22040 KB Output is correct
24 Correct 239 ms 22036 KB Output is correct
25 Correct 90 ms 8096 KB Output is correct
26 Correct 89 ms 8088 KB Output is correct
27 Correct 241 ms 22044 KB Output is correct
28 Correct 230 ms 22104 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 10 ms 1120 KB Output is correct
9 Correct 231 ms 22040 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1196 KB Output is correct
13 Correct 250 ms 22276 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 608 KB Output is correct
17 Correct 94 ms 8132 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 59 ms 5764 KB Output is correct
22 Correct 243 ms 22004 KB Output is correct
23 Correct 235 ms 22020 KB Output is correct
24 Correct 246 ms 22084 KB Output is correct
25 Correct 97 ms 12100 KB Output is correct
26 Correct 90 ms 8096 KB Output is correct
27 Correct 252 ms 22112 KB Output is correct
28 Correct 261 ms 22028 KB Output is correct
29 Correct 101 ms 12068 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 60 ms 5800 KB Output is correct
5 Correct 232 ms 22056 KB Output is correct
6 Correct 230 ms 22084 KB Output is correct
7 Correct 256 ms 22040 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 62 ms 5740 KB Output is correct
10 Correct 238 ms 22176 KB Output is correct
11 Correct 229 ms 22176 KB Output is correct
12 Correct 250 ms 22020 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 58 ms 5788 KB Output is correct
17 Correct 234 ms 22100 KB Output is correct
18 Correct 239 ms 22072 KB Output is correct
19 Correct 227 ms 22088 KB Output is correct
20 Correct 235 ms 22076 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 10 ms 1200 KB Output is correct
7 Correct 240 ms 22028 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1100 KB Output is correct
13 Correct 231 ms 22032 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 98 ms 8084 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 58 ms 5784 KB Output is correct
21 Correct 230 ms 22212 KB Output is correct
22 Correct 229 ms 22100 KB Output is correct
23 Correct 239 ms 22040 KB Output is correct
24 Correct 239 ms 22036 KB Output is correct
25 Correct 90 ms 8096 KB Output is correct
26 Correct 89 ms 8088 KB Output is correct
27 Correct 241 ms 22044 KB Output is correct
28 Correct 230 ms 22104 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 10 ms 1120 KB Output is correct
37 Correct 231 ms 22040 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1196 KB Output is correct
41 Correct 250 ms 22276 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 5 ms 608 KB Output is correct
45 Correct 94 ms 8132 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 59 ms 5764 KB Output is correct
50 Correct 243 ms 22004 KB Output is correct
51 Correct 235 ms 22020 KB Output is correct
52 Correct 246 ms 22084 KB Output is correct
53 Correct 97 ms 12100 KB Output is correct
54 Correct 90 ms 8096 KB Output is correct
55 Correct 252 ms 22112 KB Output is correct
56 Correct 261 ms 22028 KB Output is correct
57 Correct 101 ms 12068 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 4 ms 588 KB Output is correct
61 Correct 102 ms 8084 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 67 ms 5732 KB Output is correct
66 Correct 115 ms 8084 KB Output is correct
67 Correct 98 ms 8096 KB Output is correct
68 Correct 94 ms 8088 KB Output is correct
69 Correct 109 ms 12056 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 10 ms 1200 KB Output is correct
7 Correct 240 ms 22028 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1100 KB Output is correct
13 Correct 231 ms 22032 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 98 ms 8084 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 58 ms 5784 KB Output is correct
21 Correct 230 ms 22212 KB Output is correct
22 Correct 229 ms 22100 KB Output is correct
23 Correct 239 ms 22040 KB Output is correct
24 Correct 239 ms 22036 KB Output is correct
25 Correct 90 ms 8096 KB Output is correct
26 Correct 89 ms 8088 KB Output is correct
27 Correct 241 ms 22044 KB Output is correct
28 Correct 230 ms 22104 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 10 ms 1120 KB Output is correct
37 Correct 231 ms 22040 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1196 KB Output is correct
41 Correct 250 ms 22276 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 5 ms 608 KB Output is correct
45 Correct 94 ms 8132 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 59 ms 5764 KB Output is correct
50 Correct 243 ms 22004 KB Output is correct
51 Correct 235 ms 22020 KB Output is correct
52 Correct 246 ms 22084 KB Output is correct
53 Correct 97 ms 12100 KB Output is correct
54 Correct 90 ms 8096 KB Output is correct
55 Correct 252 ms 22112 KB Output is correct
56 Correct 261 ms 22028 KB Output is correct
57 Correct 101 ms 12068 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 60 ms 5800 KB Output is correct
62 Correct 232 ms 22056 KB Output is correct
63 Correct 230 ms 22084 KB Output is correct
64 Correct 256 ms 22040 KB Output is correct
65 Correct 0 ms 204 KB Output is correct
66 Correct 62 ms 5740 KB Output is correct
67 Correct 238 ms 22176 KB Output is correct
68 Correct 229 ms 22176 KB Output is correct
69 Correct 250 ms 22020 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 58 ms 5788 KB Output is correct
74 Correct 234 ms 22100 KB Output is correct
75 Correct 239 ms 22072 KB Output is correct
76 Correct 227 ms 22088 KB Output is correct
77 Correct 235 ms 22076 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 0 ms 204 KB Output is correct
80 Correct 4 ms 588 KB Output is correct
81 Correct 102 ms 8084 KB Output is correct
82 Correct 1 ms 204 KB Output is correct
83 Correct 1 ms 204 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 67 ms 5732 KB Output is correct
86 Correct 115 ms 8084 KB Output is correct
87 Correct 98 ms 8096 KB Output is correct
88 Correct 94 ms 8088 KB Output is correct
89 Correct 109 ms 12056 KB Output is correct
90 Correct 1 ms 204 KB Output is correct
91 Correct 1 ms 204 KB Output is correct
92 Correct 5 ms 612 KB Output is correct
93 Correct 104 ms 8092 KB Output is correct
94 Correct 0 ms 204 KB Output is correct
95 Correct 1 ms 204 KB Output is correct
96 Correct 1 ms 204 KB Output is correct
97 Correct 24 ms 2184 KB Output is correct
98 Correct 96 ms 8088 KB Output is correct
99 Correct 91 ms 8088 KB Output is correct
100 Correct 93 ms 8132 KB Output is correct
101 Correct 98 ms 8088 KB Output is correct
102 Correct 91 ms 8088 KB Output is correct
103 Correct 99 ms 8084 KB Output is correct
104 Correct 98 ms 8096 KB Output is correct
105 Correct 100 ms 10128 KB Output is correct